1628983 has 2 divisors, whose sum is σ = 1628984. Its totient is φ = 1628982.

The previous prime is 1628947. The next prime is 1628987. The reversal of 1628983 is 3898261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1628983 - 2¹⁷ = 1497911 is a prime.

It is a super-2 number, since 2×1628983² = 5307171228578, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 6⁴ + 2 + 8³ + 9² + 8⁵ + 3¹³ .

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814491 + 814492.

It is an arithmetic number, because the mean of its divisors is an integer number (814492).

2^1628983 is an apocalyptic number.

1628983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628983 is an equidigital number, since it uses as much as digits as its factorization.

1628983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 1628983 is about 1276.3161833966. The cubic root of 1628983 is about 117.6627110498.

The spelling of 1628983 in words is "one million, six hundred twenty-eight thousand, nine hundred eighty-three".